I've been using my AN50R for a long time with a single Kingston
KVR400X64C3A/512 installed.  It's worked fine, no problems.
My Visual Studio project demands more memory, so I purchased a
KVR400X64C3A/1G, since it shows up on the Kingston list for this

I bought an XPC World Cyber Games edition a couple of years ago strictly for
gaming. It's not overclocked or anything and has separate sound and video
boards instead of the onboard stuff and 1G of Kingston memory.  Suddenly one
day I went to turn it on and got nothing but the fan ...

Program:   eSupport.com BIOS Agent Version 3.55
BIOS Date: 09/12/03
BIOS Type: Phoenix-Award BIOS v6.00PG
BIOS ID:   09/12/2003-AK35-6A6LVH2EC